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; I (No Model.) 2 Sheets-Sheet 1 G. W. WILOOX. SMOKE OONSUMING FURNACE.

No. 412,007. Patented 001;. 1, 1889.

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(No Model.) 2 Sheets-Sheet 2.

W. WILGOX. SMOKE GONSUMING FURNAUE- No. 412,007. Patented Oct. 1, 1889.

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Nr'rnn 'rarns a'rnn'r GEORGE \VASiiiNG'l'UN WILOOX, OF ST. LOUIS,MISSOURI.

$PECIFICATION forming part of Letters Patent No. 412,007, da

9 October 1, 1889.

Application filed April 1, 1889 Serial No. 305,554. (No model.)

I and I are provided with longitudinall To all whom it may concern:

Be it known that I, Gnonsn WAsnrncroN 'WILCOX, of St. Louis, in the Sateof Missouri, have invented a new and Improved Smoke-Consuming Furnace,of which the following is a full, clear, and exact description.

This invention is an improvement in that class of steam-boiler furnacesin which jets of mingled heated air and steam are projected uponincandescent coal within the firebox.

The features constituting the improvement are hereinafter described inconnection with others heretofore employed Reference is to be had to theaccompanying drawings, forming a part of this specification, in whichsimilar letters of reference indicate corresponding parts in all thefigures.

Figure 1 is a plan view of theimproveinent as applied, and with parts insection. Fig. 2 is a side elevation of the same, with parts in sectionand parts broken out. Fig. 15 is an enlarged sectional plan view of theimprovement on the line a: of Fig. Fig. 4 is an enlarged sectional endelevation of the improvement on the line y y of Fig. 1, and

Fig. 5 is a sectional side elevation of the same on the line 2 a of Fig.a.

The boiler A, of any approved constructio11,is provided with theparallel flues B, and is set in a furnace 0, provided with the usualfire-box D, having the grate-bars E, below which is the ash-pit F. Thesmoke and gases arising from the burning fuel on the grate-bars E passunder the boiler A to the rear end of the same, and to the smokefluesB,throughthe same, and into thesmokebox G, leading to the chimney.

On top of the boiler A extends a pipe II, supporting thehorizontally-extending steamdome H, from which leads a pipe H forcarrying the steam to the radiators or to the machines to be driven.From the bottom of the steam-dome H extend the pipes I and I, passinginto the ends J and J of an air-pipe J, located in the fire-space of thefurnace alongside the boiler A. The extreme outer ends of the pipe Jopen to the outside air, and the lower ends of the pipes extendingnozzles 1*, which open forward, as is plainly shown in Fig. 2. From eachof the pipes I or 1 leads a branch pipe 1 which extends into therespective end J or J 2 of the pipe J somewhat in the rear of the pipeI, and is also provided with a nozzle extending in the same direction asthe nozzles I of the pipes I and I. The middle part J 3 of the pipe Jextends transv ersely under the boiler A in the fire-box l). The ends ofthis middle part J connect by the vertical parts J 4 and J with the endsJ and J 2 of the pipe J. In the middle part J of the pipe J are arrangeda number of apertures J which open into the fire-box D.

From the top of the steam-domc II leads a pipe K, extending forward anddownward to terminate in a transversely-extending pipe 1i, held in frontof the middle part J of the pipe J in the fire-box D. From the pipe Klead a number of nozzles K into the interior of the middle part J of thepipe J, directly opposite the openings J". A valve L is held in the endof the pipe K, and serves to shut off the steam from the dome II. to thepipe K whenever desired.

The operation is as follows: \Vhen the fuel on the grate-bars E is.burning and steam is up in the boiler A, if the operator opens the valveL the steam from the dome II passes through the pipes I and I into theends J and J of the pipe J. The steam entering the ends J and J 2 passesin the direction of the arrow athat is, toward the front of the boilerA-so as to create a suction in the rear parts of the said pipe ends Jand J whereby air is drawn into the same from the outside, and mingleswith the steam from the dome H. The mixture of steam and air passes fromthe pipe ends J and J through the vertical parts J 4 and J 5 into themiddle part J from which the mixture is injected through the openings JG into the fire-box. This discharge is aided by the steanrjets from thenozzles K which drive or project the mingled air and combustible gasesto the extreme back portion-of the gratc-a point which they mightotherwise not reach.

The introduction of steam into the pipes J ducting-pipes J J 5 Jarranged as specified, not only induces air-currents therein, but alsothe steam-pipes I I I and the fire-box, boiler, prevents the pipes fromburning.

and steam-dome, alhas shown and described. 10 What I claim is GEORGEWASHINGTON WILCOX. 5 The combination of the supplementary WVitnesses: v

steam-conducting pipe K K, having nozzles LEO BENZ,

K and valve L, with the steam and air con- GEO. NORDEN.

